I took the index of the words, transformed the variety to binary, included three zeros, calculated the sha256 digest, took the initial A part of the hexadecimal to convert it to binary, additional three zeros to your eight digits on the binary and obtained 00000010011 which interprets to 19 in https://onelifesocial.com/story4147683/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator